US Bridges

Drane RD over Trib of Prairie CR

Fair

Boone County, Missouri · S 21 T 50 N R 14 W · Structure no. 14246

Built
1984
41 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

Drane RD over Trib of Prairie CR is a steel stringer/multi-beam or girder carrying Drane RD over Trib of Prairie CR in Boone County, Missouri. It was built in 1984, so it is 41 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 48 by 2043. The structure is 32 ft (9.8 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesDrane RD
CrossesTrib of Prairie CR
LocationS 21 T 50 N R 14 W
RouteCounty Highway 61
CountyBoone County
StateMissouri
Coordinates39.11267, -92.49197
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic48 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Drane RD over Trib of Prairie CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Drane RD over Trib of Prairie CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does Drane RD over Trib of Prairie CR carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Drane RD over Trib of Prairie CR?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns Drane RD over Trib of Prairie CR?

It is owned by the County Highway Agency.